package com.akai.controller;

import com.akai.pojo.Result;
import com.akai.pojo.User;
import com.akai.service.UserService;
import com.akai.utils.JwtUtil;
import com.akai.utils.Md5Util;
import com.akai.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import org.springframework.util.StringUtils;

import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("/user")
@Validated
public class UserController  {

    @Autowired
    private UserService userService;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username,@Pattern(regexp = "^\\S{5,16}$") String password){

    //查询用户
    User u = userService.findByUsername(username);
    if(u==null){
        //没有占用
        //注册
    userService.register (username,password);
    return Result.success();
    }else{
        //占用
    return Result.error("用户名已被占用");
    }

    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username,@Pattern(regexp = "^\\S{5,16}$") String password){
    //根据用户名查询用户
    User loginUser = userService.findByUsername(username);
     //判断用户是否存在
    if (loginUser==null){
        return Result.error("用户名错误");
    }
    if (Md5Util.getMD5String(password).equals(loginUser.getPassword())){
        //登陆成功
        Map<String,Object> claims = new HashMap<>();
        claims.put("id",loginUser.getId());
        claims.put("username",loginUser.getUsername());
        String token = JwtUtil.genToken(claims);
        return Result.success(token);
    }
    return Result.error("密码错误");
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization")String token*/){
        //根据用户名查询用户
       /* Map<String, Object> map = JwtUtil.parseToken(token);
        String username = (String) map.get("username");*/
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User user = userService.findByUsername(username);
        return Result.success(user);
    }
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        Map<String,Object> map = ThreadLocalUtil.get();
        Integer id = (Integer) map.get("id");
        userService.update(avatarUrl,id);
        return Result.success();
    }
    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params){
        //校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        if (!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要参数");
        }
        //校验原密码是否正确
        //调用userService的原密码与oldPwd比对
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser = userService.findByUsername(username);
        //调用service层完成密码更新
        if (!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码错误");
        }
        //校验newPwd和rePwd是否一致
        if(!newPwd.equals(rePwd)){
            return Result.error("新密码不一致");
        }
        userService.updatePwd(newPwd);
        return Result.success();
    }
} 
